Baker s oven



(No Model.)

T. HARRINGTON.

BAKERS OVEN. No. 258,416. 7 I Patented May 23,1882.

N. PETHRs. rmwmo n m. Wuhingion. n c.

UNTTE STATES ATENT FFKCE.

TIMOTHY HARRINGTON, OF BOSTON, MASSACHUSETTS.

BAKERS OVEN.

SPECIFICATION forming part of Letters Patent No. 258,416, dated May 23, 1882.

' Application filed December 8, 1881. (No model.)

To all whom it may concern:

Be it known that I, TIMOTHY HARRINGTON, of Boston, in the county of Suffolk and State of Massachusetts, have invented certain Improvements in Bakers Ovens, of which the following is a specification.

This invention has for its object to provide a bakers oven adapted to utilize to the highest practicable degree all the heat furnished by the fuel consumed, and capable of being conveniently and economically managed. v

To these ends my invention consists in the improvements which I will now describe and claim.

0f the accompanying drawings, forming a part of this specification, Figure 1 represents a perspective view of an oven embodying my improvements. Fig. 2 represents atransverse vertical section of the same. Fig. 3 represents a longitudinal vertical section. Fig. 4 represents a horizontal section on line X X of Fig. 2. Fig. 5 represents a horizontal section on line Y Y, Fig. 3.

The same letters of reference indicate the same parts in all the figures.

In the drawings, A represents the oven proper, and B represents a fire-pot under the same. The oven is of cylindrical form and has journaled in its ends a shaft, a, having arms to which are pivoted the swinging shelves 1).

O represents a flue, which communicates at one end through a smaller flue, c, with thefirepot B, and extends upwardly therefrom over the oven A, and downwardly to one or more escape-pipes, d, which are connected to a chimney. (Not shown in the drawings.) The flue O is therefore adapted to conduct the products of combustion from the fire-pot around nearly the entire periphery of the oven, so that the heat will be utilized to the best advantage.

0 0 represent fiues communicating with the fire-pot through smaller fiues c c, and extending upwardly at the ends of the oven and communicating with the upper portion of the flue (J. The products of combustion pass from the fire-pot through the fiues 0, heat the ends of the oven, and then enter theflue G and pass to the escape-pipes.

The fire-pot B is provided With a sliding top or cover, 6, which is provided with a handle, 0, so that it may be drawn back to permit the heated air and gases to pass directly upward from the fire-pot. The oven A is open at its bottom and communicates with the fire-pot (when the latter is open at its top) through the spacef, inclosed by the inner walls of the fiues O C, so that the oven may be directly and quickly heated from the fire-pot when the cover 6 is withdrawn. This may be done whenever it is desired to strongly increase the heatin the oven; but usually the cover 0 will remain closed and theproducts of combustion willpass through the fiues O G. I prefer to provide an opening in the inner wall of the flue O nearest the escape-pipes and cover said opening with a damper or slide, g. opening the slides e and g the draft will be made more direct, the productsof combustion passing from the fire-pot to the escape-pipes without passing through the main portion of the flue O. This will only be done when the fire is being started. The fire-pot is locatedin a casing, l), which is heated by radiation from the fire-pot, and may serve as a secondary oven, it being provided with doors i i. The fire-pot is provided with a tilting grate, j, below which is a sifting-grate, k, on which the contents of the fire-pot may be dropped. The grate j has a downwardly-projecting lug, 0, whereby it may be tipped. Below the grate k is an ashpit, l.

m represents a chute extending from the tirepot to the outside of the casing D for the introduction of fuel to the fire-pot. Said chute is provided with a cover at its outer end.

The shaft a of the oven A is provided with a crank, and has rigidly attached to it two ratchets, r 1",0ne of whichhasits teeth formed oppositely to the other.

8 8 represent pawls pivoted to the outer casing of the oven and adapted to engage respectively with the ratchets r 1". By the combined action of the ratchets r r and pawls s s the shaft to is held from rotating in either direction, so that it may be held at any desired point when its shelves are unequally loaded.

I claim- 1. In a bakers oven, the combination of the oven A, the fire-pot B under the oven, the flue O, surrounding the oven and arranged to conduct the products of combustion around the oven, as described, and the end flues, c 0, con- (See Figs. 2 and 4.) Bynected with the fire-pot and conducting the products of combustion upwardly along the ends of the oven into the flue G, as set forth.

2. In a bakers oven, the combination of the oven A, containing the shelves, and havingthe lowerextensiomf, with the flue O, surrounding the oven, the fire-pot, and the slides or dampers e 9, whereby the products of combustion may be caused to pass from the fire-pot directly through the extension f and into the flue 0, without passing into the part of the oven containing the trays, substantially as described.

3. In a bakers oven, the combination of the oven A, the fire-potB under the oven, the flue G, surrounding the oven and arranged to conor dampers e 9, whereby direct communication can be had from the fire-pot to the flue 0 through the lower extension, f, of the oven, substantially as described.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

TIMOTHY HARRINGTON.

Witnesses:

JOHN ONEILL, HENRY W. B. OoLTEN. 

